Note: I am NOT a speedrunner, so my videos are not perfect. I'm uploading these as a way of showing people the shortcuts and glitches that I have seen online and can prove whether or not they work on the PS2 version of Tomb Raider: Anniversary. They may work on other versions, they may not. I don't know, so please don't ask me about it. Apologies about the video quality. I don't have a means of recording my console gaming except for taping off of the television with the digital camera. This shortcut is used in the Doppleganger room. To perform it, you'll have to use the center wheel with your double the first time. Then, climb up, pull the switch as usual, and from there, you'll want to jump down towards the pillar along the wall. You'll land on an invisible ledge and from there you can jump to the ladder. It's a pretty reliable shortcut, so it's definitely worth using. Good luck.